
\iffalse
\xjtuappendixchapter{附录}
\xjtuappendixechapter{Appendices}
% 超过一个 section 时用 Appendices, 否则用 Appendix

    \xjtuappendixsection{二级标题}

        \xjtuappendixsubsection{三级标题}

            \xjtuappendixsubsubsection{四级标题}

    \xjtuappendixchapter{还是附录}

        \xjtuappendixsection{测试}
\fi
